Abstract- There are some difficulties in the manufacturing of complex engineering components by using subtractive machining processes and which leads to more wastage of materials. So to overcome these difficulties additive manufacturing (AM) processes are used. AM is a real scalable manufacturing process for producing any desire fully functional components using hi-tech materials. AM is the part of Rapid Prototyping. There are several additive manufacturing processes available. In this research work, fused deposition modeling process is selected. Mechanical Part Maker FDM 3D printer is used for manufacturing of sample mechanical components made of PLA plus and Carbon Fiber-PLA (abbreviated as CF-PLA) with the orientations of 00, 150, 300, 450, 600, 750 and having 11.1%, 22.2%, 33.3%, 44.4%,55.5%,66.6% densities for each orientation respectively for tensile tests. ASTM D638-type1 standard specimen for tensile test are modeled by using CATIA V5-R20 software and saved into STL files. These STL files loaded into the CURA15.04.6 software, so it can mathematically slice and generate the G-codes files. The G-code files are sent to FDM machine through PRONTERFACE software and then the Mechanical Part Maker FDM 3D printer can print the required specimen. Tensile tests were performed using UTN-40 tensile test machine. The results shows that the Maximum yield stress and maximum tensile strength for PLA+ specimens.